28761039 has 12 divisors (see below), whose sum is σ = 42428256. Its totient is φ = 18765792.

The previous prime is 28761013. The next prime is 28761043. The reversal of 28761039 is 93016782.

28761039 is a `hidden beast` number, since 2 + 8 + 7 + 610 + 39 = 666.

It is not a de Polignac number, because 28761039 - 2⁸ = 28760783 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28760994 and 28761012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28768039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33574 + ... + 34419.

It is an arithmetic number, because the mean of its divisors is an integer number (3535688).

Almost surely, 2^28761039 is an apocalyptic number.

28761039 is a deficient number, since it is larger than the sum of its proper divisors (13667217).

28761039 is a wasteful number, since it uses less digits than its factorization.

28761039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68046 (or 68043 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 28761039 is about 5362.9319406459. The cubic root of 28761039 is about 306.3854875167.

The spelling of 28761039 in words is "twenty-eight million, seven hundred sixty-one thousand, thirty-nine".